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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/sift/lib | |
download | website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.gz website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.bz2 website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.zip |
api, login, auth
Diffstat (limited to 'node_modules/sift/lib')
-rw-r--r-- | node_modules/sift/lib/index.js | 568 |
1 files changed, 568 insertions, 0 deletions
diff --git a/node_modules/sift/lib/index.js b/node_modules/sift/lib/index.js new file mode 100644 index 0000000..5362098 --- /dev/null +++ b/node_modules/sift/lib/index.js @@ -0,0 +1,568 @@ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; + +exports.default = sift; +exports.indexOf = indexOf; +exports.compare = compare; +/* + * + * Copryright 2018, Craig Condon + * Licensed under MIT + * + * Filter JavaScript objects with mongodb queries + */ + +/** + */ + +function isFunction(value) { + return typeof value === 'function'; +} + +/** + */ + +function isArray(value) { + return Object.prototype.toString.call(value) === '[object Array]'; +} + +/** + */ + +function comparable(value) { + if (value instanceof Date) { + return value.getTime(); + } else if (isArray(value)) { + return value.map(comparable); + } else if (value && typeof value.toJSON === 'function') { + return value.toJSON(); + } else { + return value; + } +} + +function get(obj, key) { + return isFunction(obj.get) ? obj.get(key) : obj[key]; +} + +/** + */ + +function or(validator) { + return function (a, b) { + if (!isArray(b) || !b.length) { + return validator(a, b); + } + for (var i = 0, n = b.length; i < n; i++) { + if (validator(a, get(b, i))) return true; + } + return false; + }; +} + +/** + */ + +function and(validator) { + return function (a, b) { + if (!isArray(b) || !b.length) { + return validator(a, b); + } + for (var i = 0, n = b.length; i < n; i++) { + if (!validator(a, get(b, i))) return false; + } + return true; + }; +} + +function validate(validator, b, k, o) { + return validator.v(validator.a, b, k, o); +} + +var OPERATORS = { + + /** + */ + + $eq: or(function (a, b) { + return a(b); + }), + + /** + */ + + $ne: and(function (a, b) { + return !a(b); + }), + + /** + */ + + $gt: or(function (a, b) { + return compare(comparable(b), a) > 0; + }), + + /** + */ + + $gte: or(function (a, b) { + return compare(comparable(b), a) >= 0; + }), + + /** + */ + + $lt: or(function (a, b) { + return compare(comparable(b), a) < 0; + }), + + /** + */ + + $lte: or(function (a, b) { + return compare(comparable(b), a) <= 0; + }), + + /** + */ + + $mod: or(function (a, b) { + return b % a[0] == a[1]; + }), + + /** + */ + + $in: function $in(a, b) { + + if (b instanceof Array) { + for (var i = b.length; i--;) { + if (~a.indexOf(comparable(get(b, i)))) { + return true; + } + } + } else { + var comparableB = comparable(b); + if (comparableB === b && (typeof b === 'undefined' ? 'undefined' : _typeof(b)) === 'object') { + for (var i = a.length; i--;) { + if (String(a[i]) === String(b) && String(b) !== '[object Object]') { + return true; + } + } + } + + /* + Handles documents that are undefined, whilst also + having a 'null' element in the parameters to $in. + */ + if (typeof comparableB == 'undefined') { + for (var i = a.length; i--;) { + if (a[i] == null) { + return true; + } + } + } + + /* + Handles the case of {'field': {$in: [/regexp1/, /regexp2/, ...]}} + */ + for (var i = a.length; i--;) { + var validator = createRootValidator(get(a, i), undefined); + var result = validate(validator, b, i, a); + if (result && String(result) !== '[object Object]' && String(b) !== '[object Object]') { + return true; + } + } + + return !!~a.indexOf(comparableB); + } + + return false; + }, + + /** + */ + + $nin: function $nin(a, b, k, o) { + return !OPERATORS.$in(a, b, k, o); + }, + + /** + */ + + $not: function $not(a, b, k, o) { + return !validate(a, b, k, o); + }, + + /** + */ + + $type: function $type(a, b) { + return b != void 0 ? b instanceof a || b.constructor == a : false; + }, + + /** + */ + + $all: function $all(a, b, k, o) { + return OPERATORS.$and(a, b, k, o); + }, + + /** + */ + + $size: function $size(a, b) { + return b ? a === b.length : false; + }, + + /** + */ + + $or: function $or(a, b, k, o) { + for (var i = 0, n = a.length; i < n; i++) { + if (validate(get(a, i), b, k, o)) return true; + }return false; + }, + + /** + */ + + $nor: function $nor(a, b, k, o) { + return !OPERATORS.$or(a, b, k, o); + }, + + /** + */ + + $and: function $and(a, b, k, o) { + for (var i = 0, n = a.length; i < n; i++) { + if (!validate(get(a, i), b, k, o)) { + return false; + } + } + return true; + }, + + /** + */ + + $regex: or(function (a, b) { + return typeof b === 'string' && a.test(b); + }), + + /** + */ + + $where: function $where(a, b, k, o) { + return a.call(b, b, k, o); + }, + + /** + */ + + $elemMatch: function $elemMatch(a, b, k, o) { + if (isArray(b)) { + return !!~search(b, a); + } + return validate(a, b, k, o); + }, + + /** + */ + + $exists: function $exists(a, b, k, o) { + return o.hasOwnProperty(k) === a; + } +}; + +/** + */ + +var prepare = { + + /** + */ + + $eq: function $eq(a) { + + if (a instanceof RegExp) { + return function (b) { + return typeof b === 'string' && a.test(b); + }; + } else if (a instanceof Function) { + return a; + } else if (isArray(a) && !a.length) { + // Special case of a == [] + return function (b) { + return isArray(b) && !b.length; + }; + } else if (a === null) { + return function (b) { + //will match both null and undefined + return b == null; + }; + } + + return function (b) { + return compare(comparable(b), comparable(a)) === 0; + }; + }, + + /** + */ + + $ne: function $ne(a) { + return prepare.$eq(a); + }, + + /** + */ + + $and: function $and(a) { + return a.map(parse); + }, + + /** + */ + + $all: function $all(a) { + return prepare.$and(a); + }, + + /** + */ + + $or: function $or(a) { + return a.map(parse); + }, + + /** + */ + + $nor: function $nor(a) { + return a.map(parse); + }, + + /** + */ + + $not: function $not(a) { + return parse(a); + }, + + /** + */ + + $regex: function $regex(a, query) { + return new RegExp(a, query.$options); + }, + + /** + */ + + $where: function $where(a) { + return typeof a === 'string' ? new Function('obj', 'return ' + a) : a; + }, + + /** + */ + + $elemMatch: function $elemMatch(a) { + return parse(a); + }, + + /** + */ + + $exists: function $exists(a) { + return !!a; + } +}; + +/** + */ + +function search(array, validator) { + + for (var i = 0; i < array.length; i++) { + var result = get(array, i); + if (validate(validator, get(array, i))) { + return i; + } + } + + return -1; +} + +/** + */ + +function createValidator(a, validate) { + return { a: a, v: validate }; +} + +/** + */ + +function nestedValidator(a, b) { + var values = []; + findValues(b, a.k, 0, b, values); + + if (values.length === 1) { + var first = values[0]; + return validate(a.nv, first[0], first[1], first[2]); + } + + // If the query contains $ne, need to test all elements ANDed together + var inclusive = a && a.q && typeof a.q.$ne !== 'undefined'; + var allValid = inclusive; + for (var i = 0; i < values.length; i++) { + var result = values[i]; + var isValid = validate(a.nv, result[0], result[1], result[2]); + if (inclusive) { + allValid &= isValid; + } else { + allValid |= isValid; + } + } + return allValid; +} + +/** + */ + +function findValues(current, keypath, index, object, values) { + + if (index === keypath.length || current == void 0) { + + values.push([current, keypath[index - 1], object]); + return; + } + + var k = get(keypath, index); + + // ensure that if current is an array, that the current key + // is NOT an array index. This sort of thing needs to work: + // sift({'foo.0':42}, [{foo: [42]}]); + if (isArray(current) && isNaN(Number(k))) { + for (var i = 0, n = current.length; i < n; i++) { + findValues(get(current, i), keypath, index, current, values); + } + } else { + findValues(get(current, k), keypath, index + 1, current, values); + } +} + +/** + */ + +function createNestedValidator(keypath, a, q) { + return { a: { k: keypath, nv: a, q: q }, v: nestedValidator }; +} + +/** + * flatten the query + */ + +function isVanillaObject(value) { + return value && value.constructor === Object; +} + +function parse(query) { + query = comparable(query); + + if (!query || !isVanillaObject(query)) { + // cross browser support + query = { $eq: query }; + } + + var validators = []; + + for (var key in query) { + var a = query[key]; + + if (key === '$options') { + continue; + } + + if (OPERATORS[key]) { + if (prepare[key]) a = prepare[key](a, query); + validators.push(createValidator(comparable(a), OPERATORS[key])); + } else { + + if (key.charCodeAt(0) === 36) { + throw new Error('Unknown operation ' + key); + } + validators.push(createNestedValidator(key.split('.'), parse(a), a)); + } + } + + return validators.length === 1 ? validators[0] : createValidator(validators, OPERATORS.$and); +} + +/** + */ + +function createRootValidator(query, getter) { + var validator = parse(query); + if (getter) { + validator = { + a: validator, + v: function v(a, b, k, o) { + return validate(a, getter(b), k, o); + } + }; + } + return validator; +} + +/** + */ + +function sift(query, array, getter) { + + if (isFunction(array)) { + getter = array; + array = void 0; + } + + var validator = createRootValidator(query, getter); + + function filter(b, k, o) { + return validate(validator, b, k, o); + } + + if (array) { + return array.filter(filter); + } + + return filter; +} + +/** + */ + +function indexOf(query, array, getter) { + return search(array, createRootValidator(query, getter)); +}; + +/** + */ + +function compare(a, b) { + if (a === b) return 0; + if ((typeof a === 'undefined' ? 'undefined' : _typeof(a)) === (typeof b === 'undefined' ? 'undefined' : _typeof(b))) { + if (a > b) { + return 1; + } + if (a < b) { + return -1; + } + } +}; + |